Future-proof OvsdbTypesIdResolver

Instead of implementing TypeIdResolver directly, the recommended
approach is to extend TypeIdResolverBase; this ensures that upgrading
Jackson won't cause sudden build failures because of methods added to
TypeIdResolver (TypeIdResolverBase provides an appropriate default
implementation).

Change-Id: I6be57cc22a54e46e9e07ff835f7ccf9feec14c8f
Signed-off-by: Stephen Kitt <skitt@redhat.com>